Developer Builds CI Enforcement Layer on Top of BenchmarkDotNet for .NET Projects

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A developer working on a reconciliation tool called CedarRecon identified a gap in .NET performance testing: BenchmarkDotNet measures performance but does not enforce any budget or threshold policy. While dogfooding an early version of the tool, a 28% regression was detected in an unrelated method — the kind of finding that can be missed when manually reviewing CI logs. To address this, the developer built Cedar.BenchmarkGate, an open-source tool that adds committed baselines, configurable regression thresholds, and pass/fail exit codes to the benchmarking workflow. The tool is designed to run without any SaaS dependency or hosted database, making it suitable as a lightweight CI gate. Version 0.1.0-alpha.1 is now live, with planned documentation covering baseline architecture, policy separation, and the exit-code contract.

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